1// Copyright 2014 PDFium Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
6// Original code is licensed as follows:
7/*
8 * Copyright 2007 ZXing authors
9 *
10 * Licensed under the Apache License, Version 2.0 (the "License");
11 * you may not use this file except in compliance with the License.
12 * You may obtain a copy of the License at
13 *
14 *      http://www.apache.org/licenses/LICENSE-2.0
15 *
16 * Unless required by applicable law or agreed to in writing, software
17 * distributed under the License is distributed on an "AS IS" BASIS,
18 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
19 * See the License for the specific language governing permissions and
20 * limitations under the License.
21 */
22
23#include "xfa/fxbarcode/common/BC_CommonBitArray.h"
24#include "xfa/fxbarcode/common/BC_CommonBitMatrix.h"
25#include "xfa/fxbarcode/utils.h"
26
27CBC_CommonBitMatrix::CBC_CommonBitMatrix() {
28  m_width = 0;
29  m_height = 0;
30  m_rowSize = 0;
31  m_bits = nullptr;
32}
33void CBC_CommonBitMatrix::Init(int32_t dimension) {
34  m_width = dimension;
35  m_height = dimension;
36  int32_t rowSize = (m_height + 31) >> 5;
37  m_rowSize = rowSize;
38  m_bits = FX_Alloc2D(int32_t, m_rowSize, m_height);
39  FXSYS_memset(m_bits, 0, m_rowSize * m_height * sizeof(int32_t));
40}
41void CBC_CommonBitMatrix::Init(int32_t width, int32_t height) {
42  m_width = width;
43  m_height = height;
44  int32_t rowSize = (width + 31) >> 5;
45  m_rowSize = rowSize;
46  m_bits = FX_Alloc2D(int32_t, m_rowSize, m_height);
47  FXSYS_memset(m_bits, 0, m_rowSize * m_height * sizeof(int32_t));
48}
49CBC_CommonBitMatrix::~CBC_CommonBitMatrix() {
50  FX_Free(m_bits);
51}
52bool CBC_CommonBitMatrix::Get(int32_t x, int32_t y) {
53  int32_t offset = y * m_rowSize + (x >> 5);
54  if (offset >= m_rowSize * m_height || offset < 0) {
55    return false;
56  }
57  return ((((uint32_t)m_bits[offset]) >> (x & 0x1f)) & 1) != 0;
58}
59int32_t* CBC_CommonBitMatrix::GetBits() {
60  return m_bits;
61}
62void CBC_CommonBitMatrix::Set(int32_t x, int32_t y) {
63  int32_t offset = y * m_rowSize + (x >> 5);
64  if (offset >= m_rowSize * m_height || offset < 0) {
65    return;
66  }
67  m_bits[offset] |= 1 << (x & 0x1f);
68}
69void CBC_CommonBitMatrix::Flip(int32_t x, int32_t y) {
70  int32_t offset = y * m_rowSize + (x >> 5);
71  m_bits[offset] ^= 1 << (x & 0x1f);
72}
73void CBC_CommonBitMatrix::Clear() {
74  FXSYS_memset(m_bits, 0, m_rowSize * m_height * sizeof(int32_t));
75}
76void CBC_CommonBitMatrix::SetRegion(int32_t left,
77                                    int32_t top,
78                                    int32_t width,
79                                    int32_t height,
80                                    int32_t& e) {
81  if (top < 0 || left < 0) {
82    e = BCExceptionLeftAndTopMustBeNonnegative;
83    return;
84  }
85  if (height < 1 || width < 1) {
86    e = BCExceptionHeightAndWidthMustBeAtLeast1;
87    return;
88  }
89  int32_t right = left + width;
90  int32_t bottom = top + height;
91  if (m_height < bottom || m_width < right) {
92    e = BCExceptionRegionMustFitInsideMatrix;
93    return;
94  }
95  int32_t y;
96  for (y = top; y < bottom; y++) {
97    int32_t offset = y * m_rowSize;
98    int32_t x;
99    for (x = left; x < right; x++) {
100      m_bits[offset + (x >> 5)] |= 1 << (x & 0x1f);
101    }
102  }
103}
104CBC_CommonBitArray* CBC_CommonBitMatrix::GetRow(int32_t y,
105                                                CBC_CommonBitArray* row) {
106  CBC_CommonBitArray* rowArray = nullptr;
107  if (!row || row->GetSize() < m_width) {
108    rowArray = new CBC_CommonBitArray(m_width);
109  } else {
110    rowArray = new CBC_CommonBitArray(row);
111  }
112  int32_t offset = y * m_rowSize;
113  int32_t x;
114  for (x = 0; x < m_rowSize; x++) {
115    rowArray->SetBulk(x << 5, m_bits[offset + x]);
116  }
117  return rowArray;
118}
119void CBC_CommonBitMatrix::SetRow(int32_t y, CBC_CommonBitArray* row) {
120  int32_t l = y * m_rowSize;
121  for (int32_t i = 0; i < m_rowSize; i++) {
122    m_bits[l] = row->GetBitArray()[i];
123    l++;
124  }
125}
126void CBC_CommonBitMatrix::SetCol(int32_t y, CBC_CommonBitArray* col) {
127  for (int32_t i = 0; i < col->GetBits().GetSize(); i++) {
128    m_bits[i * m_rowSize + y] = col->GetBitArray()[i];
129  }
130}
131int32_t CBC_CommonBitMatrix::GetWidth() {
132  return m_width;
133}
134int32_t CBC_CommonBitMatrix::GetHeight() {
135  return m_height;
136}
137int32_t CBC_CommonBitMatrix::GetRowSize() {
138  return m_rowSize;
139}
140int32_t CBC_CommonBitMatrix::GetDimension(int32_t& e) {
141  if (m_width != m_height) {
142    e = BCExceptionCanNotCallGetDimensionOnNonSquareMatrix;
143    return 0;
144  }
145  return m_width;
146}
147